EP1424695A3 - Procédé de gestion de contenu, dispositif d'enregistrement/de reproduction et support d'enregistrement - Google Patents
Procédé de gestion de contenu, dispositif d'enregistrement/de reproduction et support d'enregistrement Download PDFInfo
- Publication number
- EP1424695A3 EP1424695A3 EP03026875A EP03026875A EP1424695A3 EP 1424695 A3 EP1424695 A3 EP 1424695A3 EP 03026875 A EP03026875 A EP 03026875A EP 03026875 A EP03026875 A EP 03026875A EP 1424695 A3 EP1424695 A3 EP 1424695A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- key
- encrypted
- management method
- recording
- content management
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
- G11B20/00217—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source
- G11B20/00246—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is obtained from a local device, e.g. device key initially stored by the player or by the recorder
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
- G11B20/00217—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source
- G11B20/00253—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier
- G11B20/00282—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier the key being stored in the content area, e.g. program area, data area or user area
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
- G11B20/00217—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source
- G11B20/00253—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier
- G11B20/00347—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier wherein the medium identifier is used as a key
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
- G11B20/00485—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier characterised by a specific kind of data which is encrypted and recorded on and/or reproduced from the record carrier
- G11B20/00492—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier characterised by a specific kind of data which is encrypted and recorded on and/or reproduced from the record carrier wherein content or user data is encrypted
- G11B20/00528—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier characterised by a specific kind of data which is encrypted and recorded on and/or reproduced from the record carrier wherein content or user data is encrypted wherein each title is encrypted with a separate encryption key for each title, e.g. title key for movie, song or data file
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
- G11B20/00485—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier characterised by a specific kind of data which is encrypted and recorded on and/or reproduced from the record carrier
- G11B20/00492—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier characterised by a specific kind of data which is encrypted and recorded on and/or reproduced from the record carrier wherein content or user data is encrypted
- G11B20/00536—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier characterised by a specific kind of data which is encrypted and recorded on and/or reproduced from the record carrier wherein content or user data is encrypted wherein encrypted content data is subjected to a further, iterated encryption, e.g. interwoven encryption
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/00666—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a step of erasing or nullifying data, e.g. data being overwritten with a random string
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/00666—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a step of erasing or nullifying data, e.g. data being overwritten with a random string
- G11B20/00673—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a step of erasing or nullifying data, e.g. data being overwritten with a random string wherein the erased or nullified data include a cryptographic key
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Storage Device Security (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002348925 | 2002-11-29 | ||
JP2002348925A JP3878542B2 (ja) | 2002-11-29 | 2002-11-29 | 記録装置 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1424695A2 EP1424695A2 (fr) | 2004-06-02 |
EP1424695A3 true EP1424695A3 (fr) | 2004-07-14 |
EP1424695B1 EP1424695B1 (fr) | 2006-08-09 |
Family
ID=32290509
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03026875A Expired - Lifetime EP1424695B1 (fr) | 2002-11-29 | 2003-11-24 | Procédé de gestion de contenu par encryption, dispositif d'enregistrement/de reproduction et support d'enregistrement. |
Country Status (7)
Country | Link |
---|---|
US (1) | US7536727B2 (fr) |
EP (1) | EP1424695B1 (fr) |
JP (1) | JP3878542B2 (fr) |
KR (1) | KR100584710B1 (fr) |
CN (1) | CN1300710C (fr) |
DE (1) | DE60307402T2 (fr) |
TW (1) | TWI241816B (fr) |
Families Citing this family (40)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE60208614T2 (de) * | 2002-09-17 | 2006-08-03 | Errikos Pitsos | Verfahren und Vorrichtung zur Bereitstellung einer Liste von öffentlichen Schlüsseln in einem Public-Key-System |
JP4525350B2 (ja) * | 2003-01-15 | 2010-08-18 | ソニー株式会社 | 信号処理システム |
WO2005074187A1 (fr) * | 2004-01-29 | 2005-08-11 | Sony Corporation | Dispositif et méthode de traitement de l'information |
US7091887B2 (en) * | 2004-04-28 | 2006-08-15 | Kabushiki Kaisha Toshiba | Modulator, modulation method, and method of manufacturing an optical recordable medium with enhanced security for confidential information |
JP2006014035A (ja) * | 2004-06-28 | 2006-01-12 | Toshiba Corp | 記憶媒体処理方法、記憶媒体処理装置及びプログラム |
JP2006020154A (ja) * | 2004-07-02 | 2006-01-19 | Toshiba Corp | コンテンツ管理方法及びコンテンツ管理用プログラム、並びに電子機器 |
WO2006008986A1 (fr) | 2004-07-23 | 2006-01-26 | Sharp Kabushiki Kaisha | Dispositif de stockage, méthode de stockage, et dispositif d'affichage d'images |
US7559089B2 (en) * | 2004-07-23 | 2009-07-07 | Findaway World, Inc. | Personal media player apparatus and method |
US8170399B2 (en) * | 2004-09-29 | 2012-05-01 | Sharp Kabushiki Kaisha | Recording device and method |
JP2006108754A (ja) * | 2004-09-30 | 2006-04-20 | Toshiba Corp | コンテンツ管理方法及び記録再生装置及び記録媒体 |
TWI277870B (en) * | 2004-11-22 | 2007-04-01 | Toshiba Corp | Copyright management method, information recording/reproducing method and device, and information recording medium and method of manufacturing the medium |
KR20060066627A (ko) * | 2004-12-13 | 2006-06-16 | 엘지전자 주식회사 | 컨텐트의 암호/해독을 위한 키를 기록하고 사용하는 방법및 장치와 그 방법에 의해 키가 기록되어 있는 기록매체 |
CN101116143A (zh) * | 2005-02-07 | 2008-01-30 | 松下电器产业株式会社 | 记录装置、再现装置、集成电路及控制程序 |
JP4675644B2 (ja) * | 2005-02-28 | 2011-04-27 | 株式会社東芝 | コンテンツ送信装置、コンテンツ受信装置、及びコンテンツ処理方法 |
JP4751111B2 (ja) * | 2005-06-28 | 2011-08-17 | 株式会社東芝 | コンテンツ記録装置、コンテンツ再生装置、コンテンツ記録方法およびコンテンツ記録プログラム |
WO2007013611A1 (fr) * | 2005-07-29 | 2007-02-01 | Matsushita Electric Industrial Co., Ltd. | Dispositif et support d'enregistrement |
JP4923582B2 (ja) * | 2006-01-19 | 2012-04-25 | Kddi株式会社 | 機器バインドコンテンツの受渡方法、コンテンツ保存装置及びプログラム |
JP4768523B2 (ja) * | 2006-06-12 | 2011-09-07 | 株式会社東芝 | 情報記録再生装置及び方法 |
JP4327865B2 (ja) * | 2007-03-29 | 2009-09-09 | 株式会社東芝 | コンテンツ処理装置、暗号処理方法及びプログラム |
KR100891564B1 (ko) * | 2007-04-09 | 2009-04-06 | 노키아 코포레이션 | 독점적 데이터 포맷 콘텐츠를 다루기 위한 방법 및 장치 |
EP2001023A3 (fr) * | 2007-06-06 | 2009-03-25 | Hitachi Ltd. | Procédé de contrôle, dispositif d'enregistrement et dispositif d'enregistrement et de reproduction |
EP2009638A1 (fr) | 2007-06-28 | 2008-12-31 | THOMSON Licensing | Prevention de la copie d' une video lorsque la difference entre les empreintes digitales avant et après sa modification est supérieure à un seuil |
WO2009086669A1 (fr) * | 2007-12-29 | 2009-07-16 | Thomson Licensing | Système et procédé de transmission de données |
KR100965888B1 (ko) * | 2008-02-19 | 2010-06-24 | 삼성전자주식회사 | 콘텐츠 제공 또는 기록 방법 및 그 방법을 수행하는 장치 |
EP2184739A3 (fr) * | 2008-07-29 | 2011-03-16 | Hitachi Ltd. | Procédé de contrôle de copie |
US9240883B2 (en) | 2008-09-04 | 2016-01-19 | Intel Corporation | Multi-key cryptography for encrypting file system acceleration |
TW201013398A (en) * | 2008-09-25 | 2010-04-01 | Walton Advanced Eng Inc | Method for applying USB record carriers and module assembled for the method |
US8571209B2 (en) * | 2009-01-19 | 2013-10-29 | International Business Machines | Recording keys in a broadcast-encryption-based system |
US20190108366A1 (en) * | 2010-01-28 | 2019-04-11 | International Business Machines Corporation | Secure data transmission utilizing distributed storage |
US8959366B2 (en) | 2010-01-28 | 2015-02-17 | Cleversafe, Inc. | De-sequencing encoded data slices |
CN102739604B (zh) * | 2011-03-31 | 2016-09-28 | 中兴通讯股份有限公司 | 媒体消息安全传输的方法和系统 |
US8886963B2 (en) * | 2011-09-15 | 2014-11-11 | Apple Inc. | Secure relocation of encrypted files |
JP5747758B2 (ja) * | 2011-09-15 | 2015-07-15 | ソニー株式会社 | 情報処理装置、および情報処理方法、並びにプログラム |
US9596344B2 (en) | 2013-03-15 | 2017-03-14 | Genesys Telecommunications Laboratories, Inc. | System and method for encrypting and recording media for a contact center |
US10277559B2 (en) * | 2014-05-21 | 2019-04-30 | Excalibur Ip, Llc | Methods and systems for data traffic control and encryption |
CN106549927B (zh) * | 2015-09-23 | 2020-11-13 | 阿里巴巴集团控股有限公司 | 密钥保存、获取方法和装置 |
JP6597248B2 (ja) * | 2015-12-04 | 2019-10-30 | ヤマハ株式会社 | システムおよび制御方法 |
CN108989015B (zh) * | 2017-05-31 | 2021-11-02 | 北京京东尚科信息技术有限公司 | 一种加密的方法和装置 |
US10374801B2 (en) * | 2017-07-14 | 2019-08-06 | Bank Of America Corporation | File security tool |
CN110750799A (zh) * | 2019-09-30 | 2020-02-04 | 北京智明星通科技股份有限公司 | 信息加密方法及装置、电子设备和计算机可读存储介质 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0886409A2 (fr) * | 1997-05-01 | 1998-12-23 | Digital Vision Laboratories Corporation | Système fournisseur d'informations |
US20020080972A1 (en) * | 1996-06-28 | 2002-06-27 | Takehisa Kato | Method and apparatus of enciphering and deciphering data using keys enciphered and deciphered with other keys |
US20020087814A1 (en) * | 2000-12-28 | 2002-07-04 | Ripley Michael S. | Verifying the integrity of a media key block by storing validation data in the cutting area of media |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
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NO302388B1 (no) * | 1995-07-13 | 1998-02-23 | Sigurd Sigbjoernsen | Fremgangsmåte og anordning for å beskytte programvare mot bruk uten tillatelse |
US6516064B1 (en) * | 1995-07-25 | 2003-02-04 | Sony Corporation | Signal recording apparatus, signal record medium and signal reproducing apparatus |
JPH09136709A (ja) | 1995-11-13 | 1997-05-27 | Koyo Rindobaagu Kk | セラミック製コンベア |
US5923754A (en) * | 1997-05-02 | 1999-07-13 | Compaq Computer Corporation | Copy protection for recorded media |
US6134660A (en) * | 1997-06-30 | 2000-10-17 | Telcordia Technologies, Inc. | Method for revoking computer backup files using cryptographic techniques |
US6118873A (en) * | 1998-04-24 | 2000-09-12 | International Business Machines Corporation | System for encrypting broadcast programs in the presence of compromised receiver devices |
US6834346B1 (en) * | 1998-07-30 | 2004-12-21 | Sony Corporation | Content processing system |
JP4206529B2 (ja) | 1998-09-17 | 2009-01-14 | ソニー株式会社 | コンテンツ管理方法及びコンテンツ記憶システム |
CN100405247C (zh) * | 1999-03-03 | 2008-07-23 | 索尼公司 | 终端、数据处理设备和方法、数据处理设备的发送方法 |
US6601046B1 (en) | 1999-03-25 | 2003-07-29 | Koninklijke Philips Electronics N.V. | Usage dependent ticket to protect copy-protected material |
JP2001022859A (ja) | 1999-04-27 | 2001-01-26 | Victor Co Of Japan Ltd | コンテンツ情報記録方法、コンテンツ情報記録装置、コンテンツ情報記録再生方法、コンテンツ情報記録再生装置、及びメディア |
JP4177517B2 (ja) | 1999-05-21 | 2008-11-05 | 株式会社東芝 | コンテンツ処理システムおよびコンテンツ保護方法 |
US7073073B1 (en) * | 1999-07-06 | 2006-07-04 | Sony Corporation | Data providing system, device, and method |
WO2001016776A1 (fr) * | 1999-08-27 | 2001-03-08 | Sony Corporation | Systeme de transmission d'informations, emetteur et recepteur, procede de transmission d'informations, procede de reception d'informations |
JP2001076348A (ja) | 1999-09-08 | 2001-03-23 | Matsushita Electric Ind Co Ltd | 光ディスクおよび光ディスク装置 |
AU1649401A (en) * | 1999-11-30 | 2001-06-12 | Fujitsu Limited | Recorder |
JP2001351323A (ja) | 2000-04-04 | 2001-12-21 | Sony Corp | 情報記録装置、情報再生装置、および情報記録方法、情報再生方法、並びにプログラム提供媒体 |
CN100401667C (zh) | 2000-06-21 | 2008-07-09 | 索尼公司 | 信息记录/再生装置及方法 |
AU2002224119A1 (en) * | 2000-11-28 | 2002-06-11 | Fujitsu Limited | Data terminal for managing ciphered content data and license acquired by software |
EP1512147A2 (fr) * | 2000-12-07 | 2005-03-09 | SanDisk Corporation | Systeme, procede, et dispositif de lecture audio, video ou d'autres contenus enregistres a partir de cartes de memoire non-volatile, de disques compacts ou d'autres supports |
JP2002229859A (ja) | 2001-01-31 | 2002-08-16 | Toshiba Corp | ディスク記憶装置及び同装置に適用する認証方法 |
JP2002328846A (ja) * | 2001-02-20 | 2002-11-15 | Sony Computer Entertainment Inc | コピー管理システム,クライアント端末装置の情報処理プログラムが記憶されたコンピュータ読み取り可能な記憶媒体,管理サーバ装置の情報処理プログラムが記憶されたコンピュータ読み取り可能な記憶媒体,クライアント端末装置の情報処理プログラム,管理サーバ装置の情報処理プログラム,コピー管理方法,クライアント端末装置の情報処理方法、及び管理サーバ装置の情報処理方法 |
JP4020077B2 (ja) * | 2001-09-14 | 2007-12-12 | ソニー株式会社 | 記録媒体の再生方法および再生装置、並びに記録媒体の記録方法および記録装置 |
JP3779580B2 (ja) * | 2001-09-27 | 2006-05-31 | 株式会社東芝 | 信号処理方法及び装置、信号再生方法及び装置、記録媒体 |
-
2002
- 2002-11-29 JP JP2002348925A patent/JP3878542B2/ja not_active Expired - Fee Related
-
2003
- 2003-11-24 EP EP03026875A patent/EP1424695B1/fr not_active Expired - Lifetime
- 2003-11-24 DE DE60307402T patent/DE60307402T2/de not_active Expired - Lifetime
- 2003-11-28 TW TW092133605A patent/TWI241816B/zh not_active IP Right Cessation
- 2003-11-28 CN CNB2003101186781A patent/CN1300710C/zh not_active Expired - Fee Related
- 2003-11-28 US US10/722,487 patent/US7536727B2/en not_active Expired - Fee Related
- 2003-11-29 KR KR1020030085957A patent/KR100584710B1/ko not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20020080972A1 (en) * | 1996-06-28 | 2002-06-27 | Takehisa Kato | Method and apparatus of enciphering and deciphering data using keys enciphered and deciphered with other keys |
EP0886409A2 (fr) * | 1997-05-01 | 1998-12-23 | Digital Vision Laboratories Corporation | Système fournisseur d'informations |
US20020087814A1 (en) * | 2000-12-28 | 2002-07-04 | Ripley Michael S. | Verifying the integrity of a media key block by storing validation data in the cutting area of media |
Non-Patent Citations (2)
Title |
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INTEL, IBM, MATSUSHITA, TOSHIBA: "Content Protection for Recordable Media, DVD Book, Revision 0.95", CPRM SPECIFICATION, DVD BOOK, 31 May 2001 (2001-05-31), pages i-x,1.1 - 6.10, XP002226155, Retrieved from the Internet <URL:http://www.4centity.com/docs/versions.html> [retrieved on 20021112] * |
SCHEIKL O ET AL: "Multi-level secure multicast: the rethinking of secure locks", PROCEEDINGS INTERNATIONAL CONFERENCE ON PARALLEL PROCESSING WORKSHOPS (ICPPW'02), 18 August 2002 (2002-08-18), pages 17 - 24, XP010608426 * |
Also Published As
Publication number | Publication date |
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DE60307402T2 (de) | 2007-03-29 |
KR100584710B1 (ko) | 2006-05-30 |
TW200423668A (en) | 2004-11-01 |
US20040172549A1 (en) | 2004-09-02 |
US7536727B2 (en) | 2009-05-19 |
JP2004186825A (ja) | 2004-07-02 |
CN1300710C (zh) | 2007-02-14 |
JP3878542B2 (ja) | 2007-02-07 |
CN1505029A (zh) | 2004-06-16 |
TWI241816B (en) | 2005-10-11 |
EP1424695B1 (fr) | 2006-08-09 |
EP1424695A2 (fr) | 2004-06-02 |
DE60307402D1 (de) | 2006-09-21 |
KR20040048352A (ko) | 2004-06-09 |
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